i predict if you had 99% tax on such a business you'd sell it to one of the clients, it's simply not worth your time or investment if they see the benefits. meanwhile your client company burdened by such a tax would probably bugger off too. as happened in the 60's & 70's when it wasn't worth...
is there such a thing as "lafferism", or is it a bogeyman invented to criticise? Laffer just offered a simplifed model that showed how tax/revenue works and there is an optimal rate, after which revenue reduces. incentives and disincentives matter, in general people will do less if they are...
brilliant breakdown, just £100 for every taxpayer, so little who wouldn't want to pay that? now do the same for every other facet of possible public spending: say more teachers, teachers' pay rise, more support staff, more buildings, better building, more books, more IT, pay for school uniforms...